Additional Data for Resistance, Sinkage and Trim

Abstract

In this Chapter, additional resistance, sinkage and trim data are presented against Froude number for KVLCC2, KCS and DTMB 5415. Comparisons are made with the original data used at the Workshop. The purpose is to provide additional information useful for future validation of CFD results and to estimate the uncertainty in the data from the different facilities. However, due to lack of information about precision in most measurements only bias errors are estimated. For KVLCC2 and KCS one additional set of data is added to that used at the Workshop. The estimated bias errors in residuary resistance are very small, around 0.2 % of the mean total resistance, while those of sinkage and trim are considerably larger: 6–11 % of the mean values across the Froude number range. For 5415 new data from three organizations are presented. Bias errors in residuary resistance are 0.9–1.6 % of the mean total resistance. Sinkage errors are in the range 3–6 % of the mean value and trim errors around 0.01°.